Ophthalmic mounting and method



. I 4 1,636,336 July 19 1927 D. P. BERNHEIM OPHTHALMIC MOUNTING ANDMETHOD Filed Mron 1s, 192s Cdl Patented July 19, 1927.

Unirse STATES e ATE oFF-ics.

:DANIEL PUnsEL BERNHEIM, or sou'rnnmnen. MASSACHUSETTS, Asslonon; BY -1MESNE ASSIGNMENTS; TOBAUSOH' AND LOMBOPlIICAIi COMPANY, 0E ROCHESTER,NEW YORK, Al (.70IRJPORA'IIOITy OF NEW YORK.

OPHTHALMIC MOUNTING Anni/runnen;

Application led March 13; 1.923. Serial; No. 624;'756.

of the improved ophthalmic mounting andl method of making the same,hereinafter described, illustrated in the accompanying drawings, anddefined in the appended` claims.

In the drawings, Fig. l is au .elevation of an improved ophthalmicAmounting A. constructed according to the present invention;

Fig. 2 is a section ofa non-metallic rod out of which the non-metallicrim of the present invention may be constructed; Fig 3 illustrates astep in the manufacture o t metallic rim of the present invention;liigs. 4 and 5 are a side and a fragmentary end elevation, respectively,illustrating a further step in the manufacture; Fi'g; 6 is a sectiontaken uponl the line 6"-60f Fig. 5, looking in the direction of thearrows; IFig. 7 is a section of the'completed non-metallic rimconstructed according toa preferrederrrbodiment of the presentinvention; Fig. 8 1s an elevation of the same; and. Figa/9 isa sectiontaken upon. the line 9 9 of Fig. 1.

The standard inner metal rim 2, as is Well "known, isofsubstantially'circular cross section,` and is provi-ded with an innerlens-receiving groove elof narrower Width than the cross sectionaldiameter ofthe rim, as will be clear from Fig. 9. Resulting` from themethod of manufacture (not illustrated) of the rim 2, the faces of thegroove tare usually slightly rounded at their junction 8 w ith theexterior surface 10 of the rim. The invention is not restrictedlto usein .spectacles, but Afor,illustrative purposes,.a spectacle mounting. is.shown in Fig.` l. The

spectacle meta-l 'rims' Q are splitiat'lQ, end

pieces 14 being shown securedlo the split he ,nonf 'ends ofi the rims.4Temples 15l are receivedbetweenthe'end pieces 14 inthecustomary manner.The usualnose-bridge isfindicated at 16. l

The outer rim-18 ofthe present invention is-constructedof resilient,non-metallic material, like-zylonite, andis provided Withan annular neckorbody portion 2'l`and;annular Wings-24and25. Between the wings Qiland'l25 is: formed. an innerA annularv slotQQgWithinwwhichthfe metal rim 2isuseate'd". The-Wall of. the slot' 20 is 4circular/in cross* section,-Vthe exterior surface 10of the metal rim andthe wall of; the slot- 2O`being'shaped Lto conform to each other. The outer portionsB of the wings24 and'Q'that are situatedV comparatively far'from theneclrorbodyportion 21 are nearer together than theportions ofthe Wingsthat are located"` between tlie-neclror The mouth 22-of'the,slot'istlrerefore narrower than the cross-sectional" diameter ofthe rim; VThe nearer-togetherportions 38, onl opposite sidesof the mouthmetalfrimV 2` to'h'o'ld "the rims against separatieni' A'sthenon-metallic material ofthe rim,` 18A is: resilient, the metali'rimis held snugly in place. lThe rims 2 and'18 may be assembled bytemporarily resiliently separating the Wings at the AmouthQQ'toitem-porari'ljf"openv out the distancebetween the portions 38. Themetal rim is then introduced into the A'slot Q() by Way of ther opened-Q out'port'ionsfSSLof-the Wings-'atthe mouth 22."

In practice, tlie metal rim Qis forcedin'to tlie slotA 20 the resilientLWings 24' and-25 yielding momentarilTv at such` timey to permit the.metal rim,to `become-seatediWithin the slot, and then snapping, orspringing .bacl'into normal position, where theyifrmly engage and'holdfthe` metalrim. The rims body portion land these outer-portions 38.

A22, engage-the y i can not be` accidentally `separated because `of thisresilient engagement, butowing `to the round' contour of-tlie metal rim2, intentional separat-ion may be readily eifectedby pulling upon one orboth: ofthe` split* ends 26 of the zyl'onite rim in a direction awayfrom themetal rim, as indicated by theV arrow-s, Fig. 1.. The wings24rand'25 lwill then resiliently slide momentarily over the roundexterior surface, 10Lof the metalrim 2 to permit the unseatingjnof themetal-aim. It is preferredto manufacture the: nonmetallic rim' 18` fronrnon-metallic lrods Q8,

ico

Fig. 2, though non-metallic tubes, instead of rods, may be employed, ifdesired. The rst step is to reduce the rod to proper diameter. This maybe effected in any desired manner, but it is preferred not to impose anylongitudinal strain upon the rod during the reducing action, for thiswould disturb the molecular condition of the nonmetallic material, andwould induce later shrinking in the direction of the length of the rim.-Such shrinking would cause the ends of the non-metallic rim to becomesepa rated from the end pieces la. The reducing action is thereforeeifected by cutting, grinding or buiiing in a circumferential direction.A .slot having plane parallel walls 30 is then out longitudinally of therod, as shown more particularly in Fig. 3. A slot' of this character isvery easily cut in the rod. Therod is then coiled upon a mandrel 32, andits ends secured in place upon the mandrel, as shown at 34, in Fig. 5. Apermanent set is given to the material of the rod while coiled upon themandrel. This may be done in any well known manner, as by the use ofheat. The coil is n-ext cut along a line parallel to the axis of themandrel 32, as by means of a saw entering a slot 33 in the mandrel. Thecoiled rod will thus become converted into a plurality of nonmetallicrims, one of which is shown in Fig. 8. This ligure shows the rim alsonotched at a point 36 opposite to the split ends 26, to accommodate thebridge 16. The outer portions 38 of the wings 24 and 25 are now bentinward and set in bent position, as illustrated in Fig. 7, so as toenable them to engage around, and lit tightly against, the roundedface-s 8, as is illustrated in Fig. 9. This operation may be effected inany desired manner. If tubes, instead of rods, are 4 used to start with,this last step may not be necessary.

Because the non-metallic material is given a permanent set: first, whencoiled on the mandrel; and later, when the portions 38 of the wings havebeen bent, the non-metallic rim will retain its shape, and hold firmlyagainst the metal rim.

It will be understood that the invention is not limited to the exactstructural details herein shown and described, but that modications maybe made therein by persons `skilled in the art without departing fromits spirit and scope, as defined in the appended claims.

lVhat is claimed is:

l. An ophthalmic mounting ha\iing, in combination, ay rim ofsubstantially circular cross section, and a split rim having an annularslot within which the firstnamed rim is seated, the wall of the slotbeing of substantially circular cross section and shaped to conform tothe surface of the first-named rim, the split rim being constituted ofresilient material and adapted to yield resiliently during the seatingof Jthe first-named rim within the slot and during the separation of therims, the lirst named rim having a lens-receiving groove.

2. An ophthalmic mounting having, in combination, a split outernon-metallic rini having an annular slot, and an inner metal rim havinga. lens-receivig groove seated in the slot, the mouth of the slot beingnarrower than the cross-sectional diameter of the metal rim, and theengaging surfaces of the rims being shaped to permit of the readyseparation and reassembling of the rims.

An ophthalmic mounting having, in combination. a metal rim ofsubstantially circular cross-section, and a rim constituted ofresilient, non-metallic material having a slot within which the metalrim is seated, the wall of the slot being of substantially circular'cross section and shaped to conform to the exterior surface of the metalrim and the mouth of the slot being narrowerl than the cross-sectionaldiameter of the metal riln a wing of thel non-metallic rib beingadaiiited to yield resiliently during the seating ofthe metal rim withinthe slot and during the separation of the rims, and one of the rimshaving a lens-receiving groove.

1l. An ophthalmic mounting having, in combination. an inner metal rim ofsubstantially circular cross section having an inne!I lens-receivinggroove, and a split outer rim constituted of resilient, non-metallicmaterial having an inner annular slot within which the metal rim isseated, the wall ot the slot being of substantiallyT circularcross-section and shaped to conform te the exterior surface of the metalrim. and the mouth of the slot being narrow-er than the cross-sectionaldiameter of the metal rim, a wing of the nonmetallic rim being adaptedto yield resiliently during the seating of' the metal rim within theslot and during the separation of the rims, whereby the non-metallic rimmay be separated from the metal rim by pulling upon an end of thenon-metallic rim in a direction away from the metal riin.

5. An ophthalmic mounting having', in combination, an inner metal rim ofsubstantially circular cross-section having an inner lens-receivinggroove of narrower width than the cross-sectional diameter of the rim.the faces of the groove being rounded at their junction with theexterior surface of the .rim, and a split outer rim constituted otresilient, non-metallic material having an inner annular slot withinwhich the metal rim is seated, the wall of the slot being ofsubstantially circular cross section and shaped to conform to the.exterior surface of the metal rim and the wings of the nonm-etallic rimbeing shaped to engage around, and tit tightly against, the said roundedfaces, a wing of the non-metallic rim being adapted to yield resilientlyduring the seating of the metal rim within the' vslot and during theseparation of the rims, whereby the nonwmetallic rim may be separatedfrom the metal rim by pulling upon an end ot the non-metallic rim in adirection away from the metal rim.

6. An ophthalmic mounting having, in

combination, an inner metal rim having a lens-receiving groove, and asplit outer rim constituted of resilient, non-metallic material havingan inner annular slot within which the metal rini is seated, the walloit the slot being shaped to conform to the exterior surface of themeta] rim, and the mouth of the slot being narrow-xr than themosssectional diameter of the metal rim, the non-metallic rim beingadapted to yield resiliently during the seating of the metal rim withinthe slot and during theseparation of the rims.

7. An ophthalmic mounting having, in combination, a rim provided with aninner annular slot the mouth of which is narrower than the maximum widthof the slot, and a second rim seated within and shaped to conform to theslot having a lens-receiving groove, the portions of the lirst-named rimnear the mouth being adapted to engage the second rim to hold the rimstogether, one ol the rims being constituted of resilient ma.-

terial and adapted to yield when the second rim is forced into the slotto permit the second rim to become seated within the slot.

8. The method ol making an ophthalmic mounting that compriseslongitudinally slotting a rod constituted of resilient, nonmetallicmaterial to produce annular Wings on each side of the slot, bendinginward the material of the rim near the mouth of the slot, temporarilyresiliently separating the portions of the wings near the mouth of theslot, introducing a second rim into the slot by way ot' the opened-outportions, and permitting the opened-out portions of the wings to springback into normal position to engage the second rim and hold the rims to-Cil gether.

9. The method of making an ophthalmic mounting that compriseslongitudinally slotting a rod constituted of resilient, non-metallicmaterial, ceiling the rod upon a mandrel, setting the material of therod while coiled upon the mandrel, cutting the coil along a lineparallel to the axis of the mandrel to convert the coiled rod into aplurality ci rims, bending inward the material near the mouth of theslot of each rim, setting the bent portions of the rims, and introducinga metal rim .in one of the non-metallic rims. Y

l0. An ophthalmic mounting constituted of two elements only, one a rimof substantially circular cross section, and the other a split rimhaving an annular slot extending substantially throughout its lengthVwithin which the firstnamed rim is seated, the wall of the slot being ofsubstantially circular cross section and shaped to-conform to thesurface ofthe tirst-named rim, one of the rims being constituted ofresilient material and adapted to yield resiliently during the seatingoi" the rim Oi substantially circular cross section within the annularslot ofV the slotted rim, whereby the rims are locked togethersubstantially throughout their length.

ll. An ophthalmic mounting as delined in claim l0 in which the rim ofsubstantially circular cross section isprovided with a lensreceivinggroove and the non-metallic rim is shaped so as to engagearound and fittightly against rounded faces formed at the unction between the exteriorSurface of the grooved rim and the groove.

12. The method 0f making an Ophthalmic' mounting that comprises making anon-metallic member in substantially tubular form with alongitudinallyextending slot,rcoiling the member with the slotinteriorly disposed upon a mandrel, setting the material of the memberwhile coiled upon the mandrel, cutting the coiled member to convertitinto a plurality of rims, and introducing a metal rim in one or thenon-metallic rims.

13. The method of making an ophthalmic mounting that comprises making anon-metallic member in substantially tubular form with a longitudinallyextending slot, ceiling the member with the slot'interiorly disposed ona mandrel, supporting the interior walls of the member on the mandrel,and cutting the coiled member t0 convert it into a plurality of rims.

14. The method of making an ophthalmic mounting that comprises making anon-metallic member in substantially tubular form with a longitudinallyextending slot, coiling the member with the slot interiorly disposed ona mandrel, supporting the internal walls of the member on the mandrel,setting the material of the member while coiled upon the mandrel,cuttingthe coiled member to convert it into a plurality of rims, openinga rim out at the slot, and introducing a metal rlim into the opened-outrim by way of the s ot.

` 15. rlhe methodo'lf making an ophthalmic mount-ing that comprisesVcoiling a non-metallic member substantially tubular in form and having alongitudinally extending slot upon a mandrel, supporting the :internalwalls of the tube upon the iuandrehand cutlll)

